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Redesign Your Car: Using the Scientific Method to Improve Performance

Due to a two-hour delay, students are tasked with redesigning their race cars using the scientific method. During periods 2 and 8, students will complete activity 5, and any unfinished work will become homework. In periods 4 and 5, they will gather materials and create a hypothesis to improve their balloon-powered car that did not exceed 10 meters. The assignment includes reading pages 72-77 and completing writing on page 77. Period 6 will involve collecting writing assignments from Friday and focusing on the redesign project.

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Redesign Your Car: Using the Scientific Method to Improve Performance

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  1. 12/9/13 – two-hour delay • Periods 2 and 8 – Complete Activity 5. Whatever is not finished, is homework. • Periods 4,5– Redesign your car using the scientific method. For homework: Read pages 72-77 and complete writing in science on page 77. • Period 6 – Collect writing assignment from Friday. . Redesign your car using the scientific method. No homework.

  2. Scientific method question and hypothesis • You’ve built a race car, tested it, and none went more than 10-meters in distance. Why? • QUESTION: “My balloon-powered drinking straw racecar did not function, as planned. What can I do to improve my design and produce a car that can travel more than 10-meters?” • HYPOTHESIS: Come-up with a possible solution to your dilemma. This hypothesis should be detailed as to how you will answer the above question.

  3. You should gather new materials. • New drinking straws for the balloon and for the axle housings. • A single, long coffee stirrer, or two 13-mm long coffee stirrers. • At least one popsicle stick. If you think a longer, or wider car body will work, please take up-to three popsicle sticks. • A nine-inch balloon. • Tape to tape your balloon onto the straw. • You must consider the size of the wheels you want to make, their composition, and how you plan to attach the wheels to your axle.

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